django-orchestra/orchestra/contrib/webapps/backends/python.py
2015-04-20 14:23:10 +00:00

84 lines
3 KiB
Python

import os
import textwrap
from django.template import Template, Context
from django.utils.translation import ugettext_lazy as _
from orchestra.contrib.orchestration import ServiceController, replace
from . import WebAppServiceMixin
from .. import settings
class uWSGIPythonBackend(WebAppServiceMixin, ServiceController):
"""
Emperor mode
http://uwsgi-docs.readthedocs.org/en/latest/Emperor.html
"""
verbose_name = _("Python uWSGI")
default_route_match = "webapp.type.endswith('python')"
def save(self, webapp):
context = self.get_context(webapp)
self.create_webapp_dir(context)
self.set_under_construction(context)
self.save_uwsgi(webapp, context)
def delete(self, webapp):
context = self.get_context(webapp)
self.delete_uwsgi(webapp, context)
self.delete_webapp_dir(context)
def save_uwsgi(self, webapp, context):
self.append("echo '%(uwsgi_config)s' > %(vassal_path)s" % context)
def delete_uwsgi(self, webapp, context):
self.append("rm -f %(vassal_path)s" % context)
def get_uwsgi_ini(self, context):
return textwrap.dedent("""\
# %(banner)s
[uwsgi]
plugins = python{python_version_number}
chdir = {app_path}
module = {app_name}.wsgi
chmod-socket = 660
stats = /run/uwsgi/%(deb-confnamespace)/%(deb-confname)/statsocket
vacuum = true
uid = {user}
gid = {group}
env = HOME={home}
harakiri = {timeout}
max-requests = {max_requests}
cheaper-algo = spare
cheaper = 1
workers = {workers}
cheaper-step = 1
cheaper-overload = 5"""
).format(context)
def update_uwsgi_context(self, webapp, context):
context.update({
'uwsgi_ini': self.get_uwsgi_ini(context),
'uwsgi_dir': settings.WEBAPPS_UWSGI_BASE_DIR,
'vassal_path': os.path.join(settings.WEBAPPS_UWSGI_BASE_DIR,
'vassals/%s' % context['app_name']),
})
return context
def get_context(self, webapp):
context = super(PHPBackend, self).get_context(webapp)
options = webapp.get_options()
context.update({
'python_version': webapp.type_instance.get_python_version(),
'python_version_number': webapp.type_instance.get_python_version_number(),
'max_requests': settings.WEBAPPS_PYTHON_MAX_REQUESTS,
'workers': options.get('processes', settings.WEBAPPS_PYTHON_DEFAULT_MAX_WORKERS),
'timeout': options.get('timeout', settings.WEBAPPS_PYTHON_DEFAULT_TIMEOUT),
})
self.update_uwsgi_context(webapp, context)
replace(context, "'", '"')
return context